Anthropic releases Claude Haiku 5.5, cutting average running cost about 75% versus Haiku 4.5

Claude Haiku 5.5

Anthropic released Claude Haiku 5.5 for high-frequency, cost-sensitive work. The company says average running cost is about 75% lower than Haiku 4.5, and the model is available now on all platforms.

Why it matters: Anthropic positions Haiku 5.5 for summarization, compression and subagent tasks, while complex agentic coding still fits Sonnet 5.5 and Opus 5.5 better.